Pumpman and Electrician. Trained in all crafts necessary for engine maintenance (welding, refrigeration, lathe operation, electricity, pumping, water purification, oiling, evaluating engine gauges, etc.)

QBlade is an open-source, cross-platform simulation software for wind turbine blade design and aerodynamic simulation.

A quad is a unit of energy used by the U.S.

Quality control (QC) is a process by which entities review the quality of all factors involved in production.

A quality management system (QMS) is a set of policies, processes and procedures required for planning and execution of a company's core business that can impact the companies ability to meet customer requirements.

Quantity is a property that can exist as a multitude or magnitude, which illustrate discontinuity and continuity.

A quantum dot solar cell is a solar cell design that uses quantum dots as the absorbing photovoltaic material.

A raised upper deck at the after end of a ship. It is usually a feature of smaller vessels.

An artificial solid construction, alongside or projecting into a harbour or basin, which acts as a landing place for cargo and passengers. It may also function as a fitting out or repair place for a ship moored alongside.

Hydro-Québec's electricity transmission system (also known as the Quebec interconnection) is an international power transmission system centred in Quebec, Canada.

A cleat applied manually by a lever to provide the necessary locking. Hatch covers are secured to the coaming by quick-acting cleats.